What should you never do with milk when making an Iced Latte?

When preparing an Iced Latte, steaming the milk is not appropriate because this drink is intended to be served cold and refreshing. Steaming involves heating the milk to achieve a velvety texture and frothed consistency, which is characteristic of hot beverages like lattes. However, for an Iced Latte, the goal is to keep the milk cold to maintain the drink’s chilled nature.

Using cold milk is essential for achieving the right temperature balance in an Iced Latte, and combining it with espresso is a fundamental step in making the beverage. Additionally, while there is a limit to the quantity of milk that can be added to ensure the drink remains balanced and enjoyable, simply putting too much milk doesn't compromise the basic preparation technique in the same way that steaming would. Thus, not steaming the milk is the crucial information for making a proper Iced Latte.